Light emitting lamp

ABSTRACT

The present invention relates to a light emitting lamp for controlling various brightness and color more efficiently. The light emitting lamp having plural red color emitting device, green color emitting device, and blue color emitting device; comprises an input means for inputting the control request signal of brightness and color by a user, a brightness control means for generating a digital control signal modulated in amplitude wherein the digital control signal has a plurality of signal levels in accordance with the request signal of brightness, a color control means for generating a digital control signal modulated in pulse-width wherein the digital control signal has a plurality of signal level in accordance with the request signal of color, wherein the brightness and color of plurality of the emitting device are controlled by the digital control signal modulated in amplitude and pulse-width.

TECHNICAL FIELD

[0001] The present invention relates to a light emitting lamp, and moreparticularly to the light emitting lamp for controlling the brightnessand the color of the light emitting lamp effectively.

BACKGROUND ART

[0002] Generally, a light lamp radiates light by emission of heat and bydischarge of gas.

[0003] The former example may be an incandescent lamp. The incandescentlamp calorifies a tungsten filament formed within a glass bulb having avacuum or a certain gas and radiates in accordance with calorific lightgenerated by calorifying the tungsten filament.

[0004] The latter example may be a neon lamp, an arc lamp, a dischargelamp and a fluorescent lamp. The latter lamps are charged with variousgases in the glass bulb and radiate light by discharging gas.

[0005] As it described above, electric power of the conventional lightlamp is set up predetermined value for example 5 W, 10 W, 30 W, 5 W or100 W when the conventional light lamp is manufuctured.

[0006] Also, the incandescent lamp radiates one color light because theincandescent lamp radiates by calorifying the tungsten filament.Consequently a calorific light by calorifying the tungsten filament isone color.

[0007] Also, the neon lamp, the arc lamp, the discharge lamp and thefluorescent lamp radiate a certain color based on the discharge gas.

[0008] Therefore, because the conventional lamps radiate one color lightby calorifying the filament or the discharging gas charged, user mightnot be satisfied the conventional lamps who wants a variation of colorusing the conventional lamp respectively.

[0009] Also, the brightness of the conventional lamps cannot be changedbecause the brightness of the conventional lamps was set up when theconventional lamps are manufuctured.

[0010] Also, the disadvantage of the conventional lamps is that the usershould change the lamp for changing the brightness of the lamp which hasa different electric power.

[0011] So, the present invention is intended to overcome the abovedescribed disadvantages, it is an object of the present invention toprovided a light emitting lamp having red emitting elements, greenemitting elements and blue elements.

[0012] It is another object of the present invention to provide a lightemitting lamp which can be controlled brightness by amplitude modulationof emitting elements.

[0013] It is still another object of the present invention to provide alight emitting lamp which can be controlled color by pulse-widthmodulation of emitting elements.

[0014] It is still another object of the present invention to provide alight emitting lamp which beforehand stores a control value of thebrightness and the color which can automatically controlled a lightingstate by the control value of the brightness and the color are stored.

[0015] For the accomplishing the object of the present invention, inaccordance with an embodiment of the present invention, there is providea light emitting lamp having a plurality of emitting elements, includingred color emitting elements, green color emitting elements and bluecolor emitting elements, comprising, an input means for inputting acontrol request signal of brightness and color by a user, a brightnesscontrol means for generating an amplitude modulated digital regulationsignal having a plurality of signal levels according to the controlrequest signal of brightness and a color control means for generating apulse-width modulated digital regulation signal having a plurality ofsignal levels according to the control request signal of color, wherein,the brightness of the plurality of emitting elements are controlled bythe amplitude modulated digital regulation signal and the color of theplurality of the emitting elements is controlled by the pulse-widthmodulated digital regulation signal.

[0016] The brightness control means further comprises an AC/DC converterfor converting an AC power source to a DC power source, a controller forgenerating a control signal of brightness in accordance with the controlrequest signal of brightness after receiving the DC power source fromthe AC/DC converter, a D/A converter for generating a current having aplurality of signal levels by subdividing a reference voltage inaccordance with the control signal of brightness, an amplitudemodulation generator for generating the digital regulation signal of thebrightness having a plurality of signal levels by modulating thecurrent's amplitude, an electric power amplifier for amplifying thedigital regulation of the brightness generated from the amplitudemodulation generator and then for generating the digital regulationsignal of brightness amplified for the plurality of emitting elements,wherein the D/A converter generates the current having 2^(n) signallevels according to structured bits of the D/A converter.

[0017] The color control means further comprises an AC/DC converter forconverting an AC power source to a DC power source, a controller forgenerating a control signal of color in accordance with the digitalcontrol request signal of color after receiving the DC power source fromthe AC/DC converter, a D/A converter for generating a current having aplurality of signal levels by subdividing a reference voltage inaccordance with the control signal of color, a pulse-width modulationgenerator for generating the digital regulation signal of color having aplurality of signal levels by modulating the current's pulse-width, anelectric power amplifier for amplifying the digital regulation signal ofcolor generated from the pulse-width modulation generator and then forgenerating the digital regulation signal of color amplified for theplurality of emitting elements, wherein the controller controls the redemitting elements, the green emitting elements and the blue emittingelements individually, the D/A converter generates the current having2^(n) signal levels according to structured bits of the D/A converter.

[0018] Another preferred of the present invention provides a lightemitting lamp having an electrode, a spiral electrode and a substrateformative implement, comprising, a brightness control means and a colorcontrol means for controlling the brightness and the color of the lightemitting lamp installed inside of the substrate formative implement, anemitting means having a plurality of emitting elements controlled by thebrightness control means and the color control means through a pluralityof levels, a RF receiving means installed on an inside region formed theplurality of emitting elements or an outer region formed the pluralityof emitting elements, a glove cap coupled to the substrate formativeimplement removably which encloses the emitting means and the RFreceiving means.

BRIEF DESCRIPTION OF THE DRAWINGS

[0019]FIG. 1 is a schematic diagram for showing a light emitting lamp ofthe present invention.

[0020]FIG. 2 is a detailed diagram for showing an emitting means in FIG.1.

[0021]FIG. 3 is a block diagram for showing a controller in FIG. 1.

[0022]FIG. 4a is a drawing for showing a signal is amplitude modulated.

[0023]FIG. 4b is a drawing for showing a signal is pulse-widthmodulated.

[0024] <The description of the reference characters of the major partsof the drawings> 100: light emitting lamp 102: electrode 104: spiralelectrode 106: control unit 108: RF signal receiver 110: glove cap 300:AC/DC converter 302: emitting means 306: switch unit 308: controller310: D/A converter 312: amplitude modulation generator 314: pulse-widthmodulation generator 316: eiectric power amplifier 318: memory

[0025] Embodiments

[0026] Hereinafter, a light emitting lamp of the present invention willbe described with accompanying drawings, but it should be understoodthat the present invention might not be restricted and limited by thefollowing embodiments.

[0027]FIG. 1 is a schematic diagram for showing a light emitting lamp ofthe present invention, FIG. 2 is a detailed diagram for showing anemitting means in FIG. 1, FIG. 3 is a block diagram for showing acontroller in FIG. 1. FIG. 4a is a drawing for showing anamplitude-modulated signal, FIG. 4b is a drawing for showing apulse-width modulated signal.

[0028] Referring to the FIG. 1, a light emitting lamp 100 of the presentinvention comprises a projecting electrode 102, a spiral electrode 104,a control means 106, a emitting means R,G,B, a RF signal receiver 108and a glove cap 110.

[0029] The spiral electrode 104 is formed itself into spiral forcoupling up to a socket (not illustrated) of the light emitting lamplocated above the light emitting lamp 100. The projecting electrode 102is formed on a central region of the spiral electrode 104 for connectingwith the socket of the light emitting lamp.

[0030] Also, the control means 106 is installed under the spiralelectrode 104, the bottom face of the control means 106 is connectedwith the emitting means R,G,B electrically. The emitting means R,G,Bcomprises a plurality of LED(Light Emitting Device) elements.

[0031] Referring to FIG. 2, the emitting means R,G,B comprises aplurality of emitting elements which radiates a light of red color,green color and blue color when a power source is supplied to theemitting means R,G,B.

[0032] At this time, the emitting means R,G,B has an arrangementstructure of the red emitting elements, the green emitting elements andthe blue emitting elements for getting a result based on the followingmathematical formula 1.

brightness signal=green(59%)+blue(30%)+red(11%)  [MATHENATICAL FORMULA1]

[0033] The description of the arrangement structure of the red emittingelements, the green emitting elements and the blue emitting elements inaccordance with the mathematical formula 1 can be omitted because it isto be understood by one skilled in the art invention.

[0034] At this lime, the RF signal receiver 108 is installed on acentral region or the outer region formed the emitting means R,G,B whichcomprises the plurality of emitting elements. Also, the RF signalreceiver 108 can receive a RF signal when the glove cap 110 is coupled.

[0035] The glove cap 110 is coupled removably by a screw means formed onthe inside face of the control means 106. While the glove cap 110 isexplained such as a trigonal pyramid, the glove cap can be changedoptionally from the trigonal pyramid to a various shape such as acylinder, a multilateral pyramid or a sphere.

[0036] As described above, the control means 106 having an outwardconstruction of the present invention will be described withaccompanying FIG. 3.

[0037] Referring to FIG. 3, the control means 106 comprises an AC/DCconverter 300, an emitting means 302, a RF signal receiver 108, a switchunit 306, a controller 308, a digital/analog converter 310(hereinafter,the digital/analog converter called D/A converter), an amplitudemodulation generator 312, a pulse-width modulation generator 314, anelectric power amplifier 316 and a memory 318.

[0038] The RE signal receiver 108 has an equal reference character withthe RF signal receiver in the FIG. 1 because the RF signal receiver hasequal construction with the FIG. 1.

[0039] The AC/DC converter 300 converts an AC power source received fromthe outside to a DC power source and then outputs the DC power source tothe controller 308 and the emitting means 302.

[0040] The RF signal receiver 108 generates a control request signal ofbrightness and color received from a user using a remote controller wholocated in a remote place to the controller 308. At this time, thecontrol request signal of brightness and color can be infrared rays.

[0041] The switch unit 306 comprises a keypad having a plurality of keyswhich generates the control request signal of brightness and color forcontrolling the brightness and color of the emitting means 302 Forexample, the switch unit 306 can be comprised an increment key and areduction key of the brightness, an increment key and a reduction key ofthe color and a memory key.

[0042] The increment key and the reduction key of the brightnessgenerate a key signal for increasing and reducing of the brightness ofthe emitting means 302. And the increment key and the reduction key ofthe color generate a key signal for increasing and reducing of the colorof the emitting means 302. Also, the memory key for storing the controlrequest signal of brightness and color be set up by the increment keyand the reduction key of the brightness, the increment key and thereduction key of the color, the memory key can be pluralized for storinga plurality of control signals.

[0043] Also, the switch unit 306 comprises a power supply key forsupplying and excluding the power source to the emitting means 302.

[0044] The controller 308 generates a control signal of brightness andcolor in accordance with the request signal of brightness and colorinputted from the RF signial receiver 108 or the switch unit 306.

[0045] The D/A converter 310 generates a current having a plurality ofsignal levels in accordance with the control signal of brightness andcolor inputted from the controller 308. The D/A converter 310 can becomposed of 4 bits, 6 bits, 8 bits, 12 bits or 16 bits.

[0046] Also, the D/A converter 310 is unitized with the controller 308or separately from the controller 308.

[0047] The amplitude modulation generator 312 generates a regulationsignal of brightness by modulating amplitude of the control signal ofbrightness having a plurality of signal levels and then outputs theregulation signal of brightness to the electric power amplifier 316.

[0048] The pulse-width modulation generator 314 generates a regulationsignal of color by modulating pulse-width of the control signal of colorhaving a plurality of signal levels and then outputs the regulationsignal of color to the electric power amplifier 316.

[0049] The electric power amplifier 316 amplifies the regulation signalof brightness inputted from the amplitude modulation generator 312 andthe regulation signal of color inputted from the pulse-width modulationgenerator 314 and then outputs the regulation signal of brightnessamplified and the regulation signal of color amplified to the emittingmeans 302.

[0050] The brightness and color of the emitting means 302 are controlledin accordance with the regulation signal of brightness and colorinputted from the electric power amplifier 316. At this Lime, theemitting means 302 comprises red-LEDs, green-LEDs and blue-LEDs.

[0051] The memory 318 stores a key signal of brightness and color beingset up by the user using the memory key of the switch unit 306 and thenoutputs the key signal stored according to the operation of the memorykey of the switch unit 306.

[0052] Also, the memory 318 stores the key signal of brightness andcolor set up by user using the memory key of the switch unit 306 wholocated in a remote place.

[0053] Hereinafter, the process of the light emitting lamp according tothe present invention will described.

[0054] The AC/DC converter 300 converts an AC power source inputted fromthe outside to a DC power source and then outputs the DC power source tothe controller 308. Also, the AC/DC converter 300 outputs the DC powersource to the emitting means 302.

[0055] The controller 308 operated by the DC power source is receivedthe control request signal of brightness and color from the RF signalreceiver 108 or the switch unit 306.

[0056] Then, the controller 308 generates the control signal ofbrightness and color in accordance with the control request signal ofbrightness and color to the D/A converter 310.

[0057] Namely, when the control request signal of brightness or color isinputted from the RF signal receiver 108 or the switch unit 306, thecontroller 308 generates the control signal of brightness or color tothe D/A converter 310 in accordance with the control request signal ofbrightness or the control request signal of color.

[0058] The D/A converter 310 generates a current having a plurality ofsignal levels by subdividing a reference voltage in accordance with thecontrol signal of brightness or the control signal of color to theamplitude modulation generator 312 or the pulse-width modulationgenerator 314.

[0059] At this time, the D/A converter 310 Generates the current havinga plurality of signal levels by subdividing the reference voltage inaccordance with the structured bit of the D/A converter 310.

[0060] Namely, when the structured bit of the D/A converter is n bit,the D/A converter 310 generates the current having 2^(n) signal levelsby subdividing the reference voltage into 2^(n) levels in accordancewith the control signal of brightness inputted from the controller 308to the amplitude modulation generator 312.

[0061] For example, when the structured bit of the D/A converter is 4bits, the D/A converter 310 generates the current having 2⁴ signallevels by subdividing the reference voltage into 2⁴ levels in accordancewith the control signal of brightness to the amplitude modulationgenerator 312. Hence, the emitting means 302 executes a variation ofbrightness having 16 signal levels in accordance with the current having16 levels.

[0062] On the other hand, when the structured bit of the D/A converter310 is n bit, the D/A converter 310 generates the current having 2^(n)signal levels by subdividing the reference voltage into 2^(n) levels inaccordance with the control signal of color inputted from the controller308 to the pulse-width modulation generator 314.

[0063] At this time, the controller 308 generates each the controlsignal of color for controlling separately the red emitting elements,the green emitting elements and the blue emitting elements to the D/Aconverter 312.

[0064] Therefore, the D/A converter 310 subdivides the reference voltageof the red emitting elements, the Green emitting elements and the blueemitting elements and then generates the current having a plurality ofsignal levels to the pulse-width modulation generator 314 by subdividingthe reference voltage into lots.

[0065] For example, when the controller 308 generates the control signalof color for controlling the red emitting elements of the emitting means302, the D/A converter 310 being structured 4 bits generates the currenthaving 16 signal levels for controlling the red emitting elements to thepulse-width modulation generator 314.

[0066] Also, the D/A converter 310 being structured 4 bits generates thecurrent having 16 signal levels for controlling the green emittingelements of the emitting means 302 to the pulse-width modulationgenerator 314.

[0067] Also, the D/A converter 310 being structured 4 bits generates thecurrent having 16 signal levels for controlling the blue emittingelements of the emitting means 302 to the pulse-width modulationgenerator 314. Therefore, the emitting means 302 can be executedcontrolled the color control of the emitting means 302 through a total4192 levels in accordance with the current having 16 signal levels forcontrolling red emitting elements, the current having 16 signal levelsfor controlling the green emitting elements and the current having 16signal levels for controlling the blue emitting elements.

[0068] The present invention executes more accurately control ofbrightness and color because the control signal of brightness and colorhaving the plurality of signal levels are controlled by digitalprocessing based on the structured bit of the D/A convener 310.

[0069] The amplitude modulation generator 312 generates an amplitudemodulation signal such as FIG. 4a by modulating amplitude of the currenthaving the plurality of signal levels for controlling brightnessinputted from the D/A converter 310.

[0070] Referring to FIG. 4a, the amplitude of the current having theplurality of signal levels inputted from the D/A converter 310 is an A1,A2 by modulating amplitude.

[0071] At this time, the more the amplitude is higher such as A1, themore the brightness of the emitting means 302 is stronger because thepower source having a high level is supplied to the emitting means 302.The more the amplitude is lower such as A2, the more the brightness ofthe emitting means 302 is weaker because the power source having a lowlevel is supplied to the emitting means 302.

[0072] The electric power amplifier 316 amplifies the amplitudemodulation signal generated from the amplitude modulation generator 312and then outputs the amplitude modulation signal amplified. Thebrightness of the emitting means 302 is controlled in accordance withthe amplitude modulation signal amplified.

[0073] Also, the pulse-width modulation generator 314 generates thepulse-width modulation signal such as FIG. 4b by modulating thepulse-width of the current having the plurality of signal levelsinputted from the D/A convener 310.

[0074] Referring to FIG. 4b, the period of the control signal of theemitting means 302 for controlling the red emitting elements, the greenemitting elements and the blue emitting is T, the control signalcomprises a pulse-width modulation signal having a such as T1 actiontime or T2 action time during T period.

[0075] Namely, when the action time is T1 during T period, the depth ofcolor is in high concentration according to the driving current of theemitting element is increased, when the action time is T2 being shorterthan T1, the depth of color is in low concentration according to thedriving current of the emitting is decreased.

[0076] For example, the emitting means 302 represents a color tone ofpurple by the red emitting elements and the blue emitting elements. Atthis time, when the action time of the red emitting elements is longerthan the action time of the blue emitting elements, the emitting means302 represents the color of purple being approached the tone of red.

[0077] Also, when the action time of the blue emitting elements islonger than the action time of the red emitting elements, the emittingmeans 302 represents the color of purple being approached the tone ofblue.

[0078] Generally, a pixel light lamp used in an electric bulletin boardis occurred a phenomenon of persistence because the pixel is controlledby time division at a scan speed of 60 Hz such as a TV and is controlledby pulse-width modulating.

[0079] On the other hand, the light emitting lamp of the presentinvention can be prevented the phenomenon of persistence, flicker anddazzling because the light emitting lamp of the present inventionexecutes pulse-width modulation having a plurality of grades.

[0080] When the light emitting lamp of the present invention is inputtedthe control signal of brightness or color from the RF signal receiver108 or the switch unit 306, the light emitting lamp of the presentinvention controls the brightness and color of the emitting means 302 inaccordance with the control signal of brightness or color stored in thememory 318.

[0081] For example, user sets the brightness and color for a moodillumination by the plurality of keys of a remote controller or theswitch unit 306 and then demands for storing a key value set using thememory key of the remote controller or the memory key of the switch unit306. The controller stores the key value set in the memory 318

[0082] Since then, when user demands the mood illumination using thememory key of the remote controller or the switch unit 306, thecontroller controls the brightness and the color of the emitting means302 in accordance with the key value stored in the memory 318.

[0083] At this time, a description of the process for controlling thebrightness and color by key value stored in the memory 318 may beomitted because it is essentially the same as described above.

[0084] Industrial Applicability

[0085] According to the present inventions the controlling thebrightness and the color of the light emitting lamp by amplitudemodulation and pulse-width modulation though the plurality of phases.So, the advantage of the present invention is that the light emittinglamp can control the brightness and the color easily.

[0086] Also, the advantage of the present invention is that the user ofthe light emitting lamp can manipulate easily by the memory key of theswitch unit which stores the key value of the brightness and the colorwhich set by the user.

[0087] This application is therefore intended to cover any variations,uses or adaptations of the invention using its general principles.Further, this application is intended to cover such departures from thepresent disclosure as come within known or customary practice in the artto which this invention pertains.

What is claimed is:
 1. A light emitting lamp having a plurality ofemitting elements, including red color emitting elements, green coloremitting elements and blue color emitting elements, comprising: an inputmeans for inputting a control request signal of brightness and color bya user; a brightness control means for generating an amplitude modulateddigital regulation signal having a plurality of signal levels accordingto the control request signal of brightness; and a color control meansfor generating a pulse-width modulated digital regulation signal havinga plurality of signal levels according to the control request signal ofcolor; wherein, the brightness of the plurality of emitting elements arecontrolled by the amplitude modulated digital regulation signal and thecolor of the plurality of the emitting elements is controlled by thepulse-width modulated digital regulation signal.
 2. The light emittinglamp of claim 1, wherein the brightness control means further comprises;an AC/DC converter for converting an AC power source to a DC powersource; a controller for generating a control signal of brightness inaccordance with the control request signal of brightness after receivingthe DC power source from the AC/DC converter; a D/A converter forgenerating a current having a plurality of signal levels by subdividinga reference voltage in accordance with the control signal of brightness;an amplitude modulation generator for generating the digital regulationsignal of the brightness having a plurality of signal levels bymodulating the current's amplitude; an electric power amplifier foramplifying the digital regulation of the brightness generated from theamplitude modulation generator and then for generating the digitalregulation signal of brightness amplified for the plurality of emittingelements, wherein the D/A converter generates the current having 2^(n)signal levels according to structured bits of the D/A converter.
 3. Thelight emitting lamp of claim 2, wherein the D/A converter is unitizedwith the controller.
 4. The light emitting lamp of claim 1, wherein thecolor control means further comprises; an AC/DC converter for convertingan AC power source to a DC power source; a controller for generating acontrol signal of color in accordance with the digital control requestsignal of color after receiving the DC power source from the AC/DCconverter; a D/A converter for generating a current having a pluralityof signal levels by subdividing a reference voltage in accordance withthe control signal of color; a pulse-width modulation generator forgenerating the digital regulation signal of color having a plurality ofsignal levels by modulating the current's pulse-width; an electric poweramplifier for amplifying the digital regulation signal of colorgenerated from the pulse-width modulation generator and then forgenerating the digital regulation signal of color amplified for theplurality of emitting elements, wherein the controller controls the redemitting elements, the green emitting elements and the blue emittingelements individually, the D/A converter generates the current having2^(n) signal levels according to structured bits of the D/A converter.5. The light emitting lamp of claim 4, wherein the D/A converter isunitized with the controller.
 6. The light emitting lamp of claim 1,wherein the input means comprises at least one selected from the groupconsisting of a RF signal receiver for receiving the control requestsignal formed radio frequency signal and a switch unit for inputting thecontrol request signal in accordance with a certain key signal.
 7. Thelight emitting lamp of claim 6, wherein the RF signal receiver isinstalled on a central region formed the plurality of emitting elementsor an outer region formed the plurality of emitting elements.
 8. Thelight emitting lamp of claim 6, wherein the switch unit comprises atleast an increment key and a reduction key of brightness, an incrementkey and a reduction key of color and a plurality of memory keys.
 9. Thelight emitting lamp of claim 1, wherein the emitting element is aLED(Light Emitting Diode).
 10. The light emitting lamp of claim 1,further comprising; a memory for generating the control request signalof brightness and color stored to the brightness control means and thecolor control means.
 11. The light emitting lamp having an electrode, aspiral electrode and a substrate formative implement, comprising; abrightness control means and a color control means for controlling thebrightness and the color of the light emitting lamp installed inside ofthe substrate formative implement;